Discovery
Learn how each other handles overwhelm.
I need some space
Say it plainly and give a return time. Your partner will see that you asked for space and when you plan to come back.
I'll come back in
What Your partner will see
Your partner is asking for space and has given a return time.
This is useful information about how they regulate themselves.
Respect the space.
Notice what happens inside you while waiting.
Over time, both of you learn how you each experience distance. That is information about fit, not a fault.